Dyfyniad APA

Smolens. Out. Michigan State University Press.

Dyfyniad Arddull Chicago

Smolens. Out. Michigan State University Press.

Dyfyniad MLA

Smolens. Out. Michigan State University Press.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.